A new approach to general sensors for odors and volatile organic compounds (VOCs) using thin films of chemically responsive dyes as a colorimetric sensor array is described. This optoelectronic "nose," by using an array of multiple dyes whose colors change based on the full range of intermolecular interactions, provides enormous discriminatory power among odorants in a simple device that can be easily digitally imaged. High sensitivities (ppb) have been demonstrated for the detection of biologically important analytes such as amines, carboxylic acids, and thiols. By the proper choice of dyes and substrate, the array can be made essentially nonresponsive to changes in humidity.

中文翻译：

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光电鼻：通过比色传感器阵列“看到”气味。

描述了一种使用化学响应性染料薄膜作为比色传感器阵列的用于气味和挥发性有机化合物（VOC）的常规传感器的新方法。这种光电“鼻子”通过使用多种染料的阵列来实现，它们的颜色根据分子间相互作用的整个范围而改变，从而在简单的设备中提供了巨大的辨别力，可轻松地对其进行数字成像。已证明具有高灵敏度（ppb），可用于检测生物学上重要的分析物，例如胺，羧酸和硫醇。通过染料和底物的正确选择，该阵列可以由基本上不响应于湿度的变化。